Under the Toxic Substances Control Act (TSCA) of 1976, a group of non-profits and individuals led by the Fluoride Action Network petitioned the U.S. EPA in 2016 to end the addition of fluoridation chemicals into drinking water due to fluoride’s impairment of brain development during fetal and infant stages of life. The EPA rejected the petition without conducting an adequate assessment or following typical assessment procedures and guidelines. In response, we sued EPA in Federal Court in 2017. A seven-day trial was held in June 2020, and eight more trial days were held in February 2024, featuring testimony in our favor from several of the world’s leading scientists. A ruling is expected in the Spring of 2024, and if it’s in our favor, it will require the EPA to regulate fluoridation chemicals, so they no longer pose an unreasonable risk to human health.